Adaptive Speed Control Scheme Based on Congestion Level and Inter-Vehicle Distance

Author:

Yin Jicheng1ORCID,Hwang Seung-Hoon1ORCID

Affiliation:

1. Division of Electronics and Electrical Engineering, Dongguk University, Seoul 04620, Republic of Korea

Abstract

Cellular vehicle-to-everything (C-V2X) enables short-distance communication between vehicles and other users to improve road safety through data sharing. Conventional research on C-V2X typically assumes that vehicles travel at the same speed with a fixed inter-vehicle distance (Disinter). However, this assumption does not reflect the real driving environment or promote road traffic efficiency. Conversely, assigning different speeds to vehicles without a structured approach inevitably increases the collision risk. Therefore, determining appropriate speeds for each vehicle in the C-V2X framework is crucial. To this end, considering the road environment and mobility, this study introduces an adaptive speed mechanism based on the congestion level of a zone and Disinter. First, the given scenario is divided into several zones. Subsequently, based on the congestion level of a zone and the Disinter level, an adaptive speed is defined for each vehicle. This approach ensured that vehicles adopt lower speeds in congested situations to reduce the collision probability and higher speeds in sparse traffic cases to improve traffic efficiency. The performance of the proposed adaptive speed scheme is compared with that of conventional fixed-speed settings. The results show that the adaptive speed control scheme outperforms conventional fixed-speed schemes in terms of the packet reception ratio (PRR) and collision ratio (CR). Specifically, the proposed mechanism can reduce the CR to 0 and ensure that the PRR is higher than 0.98 in low-density scenarios.

Funder

Ministry of Science and ICT

Publisher

MDPI AG

Reference45 articles.

1. 3rd Generation Partnership Project (2019). Study on Evaluation Methodology of New Vehicle-to-Everything (V2X) Use Cases for LTE and NR, 3GPP Support Office. 3GPP TR 37.885 V15.3.0.

2. 3rd Generation Partnership Project (2023). Technical Specification Group Radio Access Network; NR; NR and NG-RAN Overall Description; Stage 2, 3GPP Support Office. 3GPP TS 38.300 V 17.4.0.

3. (2014). Intelligent Transport Systems (ITS); Vehicular Communications; Basic Set of Applications; Part 2: Specification of Cooperative Awareness Basic Service (Standard No. ETSI Standard EN 302 637-2).

4. (2014). Intelligent Transport Systems (ITS); Vehicular Communications; Basic Set of Applications; Part 3: Specifications of Decentralized Environmental Notification Basic Service (Standard No. ETSI Standard EN 302 637-3).

5. 3rd Generation Partnership Project (2022). Enhancement of 3GPP Support for V2X Scenarios; Stage 1, 3GPP Support Office. 3GPP TS 22.186 V17.0.0.

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